Home / 39,156.67-54,036.39-21,251.69

Finding the Fourth Proportional to 39,156.67, 54,036.39 and 21,251.69

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Solution

The fourth proportional to 39,156.67, 54,036.39 and 21,251.69 is: 29,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,156.67 : 54,036.39 = 21,251.69 : x
  2. Step 2: Convert to fraction form
    39,156.67/54,036.39 = 21,251.69/x
  3. Step 3: Cross multiply
    39,156.67x = 54,036.39 × 21,251.69
  4. Step 4: Simplify right side
    39,156.67x = 1,148,364,713.35
  5. Step 5: Solve for x
    x = 1,148,364,713.35/39,156.67
  6. Step 6: Final answer
    x = 29,327.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.